Hope grows when you feed it.
During dark times, remember this quote by Father Joseph, "After winter there should come beautiful spring days. It happens every year and it happens in every life."
Feelings, circumstances, everything changes from day to day and from moment to moment. Our lives touch so many others in positive ways, even when it is not obvious to us.
Just for today, say to yourself, "I can get through this. I am stronger than I feel."